Great Product!By nathanon 7/15/2011

I have used many phosphate/silicate remover's and this one is by far the best!

Working WellBy Nathanon 7/15/2011

Nathan would recommend this product to a friend

Been using BRS HC GFO for the last 6 mos, and while it hasn't been able to take my levels to 0, it seems to be effective in getting them very low.

great productBy Ralphon 7/13/2011

Ralph would recommend this product to a friend

I recomend this GFO to anyone with phosphate problems. I have made GFO a part of my regular maintainance.

Very effectiveBy Josephon 7/10/2011

Joseph would recommend this product to a friend

I have a hair algae problem, well I should say had a hair algae ever since putting this GFO in a filter bag in my sump it has been dying off within 2 days. Lookin good. Works great

works as well or betterBy Mileson 7/2/2011

Miles would recommend this product to a friend

works as well or better than phosban

A great valueBy Davidon 6/28/2011

David would recommend this product to a friend

I started using this GFO a couple of weeks ago in my Phosban reactor, and it is helping greatly in my battle with nuisance algae. It is much cheaper than the other brands and just as effective.

Work Excellent By Adamon 6/20/2011

Adam would recommend this product to a friend

I would recommend this product to anyone who has a saltwater aquarium.

Work as Advertised..By Toureon 6/14/2011

Toure would recommend this product to a friend

I run BRS GFO for the last year and a half in my 250 gallon system and its great, it doesn't leach phosphates as some of the other product out on the market. It also work very well in a media reactor as it doesn't break down.

GFO AWSOMEBy Melvinon 6/9/2011

Melvin would recommend this product to a friend

Every product that I bought so far works way beyound my expectations and the GFO is no exception. It is perfect for the reactor. Its like a magnet for Phosphates. ZERO in just 18 hrs. BRS is awsome at saving you money in the long run. I wish I found BRS a lot sooner. I would have saved so much money doing things one time instead of many.

algea freeBy Benjaminon 6/7/2011

Benjamin would recommend this product to a friend

Working great so far. Tumbles nicely in the dual filter system.

what you need for phosphate controlBy Alanon 6/4/2011

Alan would recommend this product to a friend

This matches the effectiveness of the name brands and comes a good deal cheaper. I can't justify going back to the others anymore.

Easy to useBy Johnon 5/31/2011

John would recommend this product to a friend

I have always used this in BRS reactors which make it easy to use and replace. I watch the rate at which algae grows on my glass as a basis for when to replace my GFO. This product is great for beginners and experts.

Great ProductBy Aideon 5/27/2011

Aide would recommend this product to a friend

I have used other GFO products but by far this is the best I have come across. Very easy to rinse and use. I would definitely recommend this product to anyone

Great ProductBy Nicholason 5/21/2011

Nicholas would recommend this product to a friend

Even with just running in a filter sock, my phosphates dropped by half in just 2 weeks. MAKE SURE YOU RINSE BEFORE USING. This stuff turned my tank red for about 2 days, but that was my own fault. Highly reccomended!

phosphates @ ZeroBy gregon 5/15/2011

greg would recommend this product to a friend

Great product, I would highly recommend to everyone. I use it regularly in the dual reactor and have had great results.

Excellent product, excellent priceBy shaungeeon 5/11/2011

shaungee would recommend this product to a friend

This product exceeded my expectations from what I had in mind after seeing the price. This is by far some of the most effective media I have found to date. Within 72 hours, my PO4 levels zeroed out and have not risen in two weeks. Amazing stuff!

InexpensiveBy Timon 5/10/2011

Tim would recommend this product to a friend

Purchased this a couple of years ago when it was sold in bag form and it's a solid performer. Performs just like the big brands at a fraction of the price.

Great product! I will be buying more of this!By Chrison 5/9/2011

Chris would recommend this product to a friend

I bought this due to it's phenominally low price, and was a little hesitant. It turned out to be an excellent product, and easily performs as well as the higher priced brand name types. I plan to buy more, as soon as I need it. It doesn't require a ton of rinsing, and if you use half the recommended dosage, but change it out twice as often, I've found it works better at reducing algae, and keeps the system more stable. Thanks, BRS!

No more phosphateBy Jerryon 4/29/2011

Jerry would recommend this product to a friend

An absolute must for a reef tank. Does an excellent job removing phoshate from the aquarium.

Great product!By DJon 4/15/2011

DJ would recommend this product to a friend

Don't have a big problem with phosphates but I still run this product 24/7. Easy to use.

Good Stuff!By Steveon 4/11/2011

Steve would recommend this product to a friend

Works great.......wouldn't run a reef tank without it.

Good Stuff!By Gabrielon 4/7/2011

Gabriel would recommend this product to a friend

I could see the growth take off on my sps corals immediately after using this. Highly recommend.

Cuts down that Phosphate By Jetthrilon 3/30/2011

Jetthril would recommend this product to a friend

Unlike most other folks would use this product in a reactor, I used this product in a media bag. Be sure to rinse out the dust before use. Due to the fact that the GFO bunches up after getting wet, I would recommend using less than what the calculator on this website recommends and change the media more frequently (not every 8 weeks), that way you water can more easily flow through the media, and the GFO can more easily take out the phosphate in the water.

greatBy jesseon 3/28/2011

jesse would recommend this product to a friend

works and performs great in my brs reactor..

Works great in a Freshwater Planted TankBy Duaneon 3/20/2011

Duane would recommend this product to a friend

I first of all borrowed some GFO from a fellow reefer to use in my Planted FW Discus 90gal. I was having a terrible time with algae. I followed the directions on the BRS "Information" page and set up a reactor with the GFO. Within a few days, my Phosphate level went for a 2ppm to a .5ppm. The GFO helps maintain the Phosphates at a acceptable level. It does not zero the phosphates out because my substrate leaches phosphates into the water and I want low level phosphates to aid in plant growth. So I have found this stuff works perfectly for me. So I purchased my own BRS GFO, which is a much better buy than the name brand. Thanks BRS!

Best GFO on the marketBy Rickon 3/17/2011

Rick would recommend this product to a friend

Don't be fooled by other "branded" GFO, this one works, and works well. I've used it for years and test 0.0 PO4!

Effective GFOBy Michaelon 3/17/2011

Michael would recommend this product to a friend

I have a 100 gallon heavily stocked SPS tank. The BRS Granular GFO is by far the best cost saving choice and maintains phosphate at nearly zero as well as any of the name brand GFO. I've tried many of the different types on the market and have observed no difference in coral growth and calcification. It is an effective GFO at a fraction of the cost. Keep in mind that running GFO is reported to knock down magnesium levels. You may need to order the magnesium supplements from BRS and a test kit to maintain your levels. Another option is to run GFO sporadically to knock down the phosphate levels and reduce amount you feed. For best results start running GFO with a new tank.

What Phosphate?By Kevinon 3/15/2011

Kevin would recommend this product to a friend

What can I say about the GFO? it works as described and extremely fast. The cost is super cheap compared to other brands and way more then enough to last for months. Great job BRS!

Awsome productBy Keiferon 3/14/2011

Keifer would recommend this product to a friend

I order this stuff after I got an algae break out and this stuff cleared it up right away. 5 stars all the way!

Does what it is supposed to do at a fair priceBy Larryon 3/14/2011

Larry would recommend this product to a friend

I run BRS GFO in a 2LF 150 reactor. Keeps phosphate levels @ 0. Did a great job helping me get rid of some hair algae.

Great product and better price!!By Ryanon 3/13/2011

Ryan would recommend this product to a friend

This GFO is great and is working wonders on my reef tank and has ruduced my phosphates to nearly zero and twice as cheap then my local pet store and is one of the most important things to use in a reefer tank IMO..

amazing productBy Jasonon 3/6/2011

Jason would recommend this product to a friend

I use this in a gfo/carbon reactor and the water clarity in my tank has a drastic improvement. I no longer have to clean the glass every day, its now once a week

Great!By Hi Salenityon 3/6/2011

Hi Salenity would recommend this product to a friend

Man if you don't use GFO you need to! This is nice stuff with very low dust

Great productBy Willon 2/23/2011

Will would recommend this product to a friend

I use GFO in BRS reactor along with snails crabs, shrimp and a tang to keep algae away. The only thing that grows on my live rocks are coral and purple coraline, thank you GFO!

Great productBy adamon 2/22/2011

adam would recommend this product to a friend

for anyone that doesnt know, this product is basically the same as phosban. the only difference is the granule size may be a little smaller and that its a ton cheaper.

GFO Works!By Bernardoon 2/16/2011

Bernardo would recommend this product to a friend

Used this in my sps reef. Corals colored up quickly and algae was almost nonexistant.

Love This Stuff.By Davidon 2/15/2011

David would recommend this product to a friend

There isn't much more to say. It works, it does so without an excess of fuss, and it is easy to use. If you have any phosphates, this is the way to go.

Excellent GFO!By Fredy on 2/14/2011

Fredy would recommend this product to a friend

I love the fact that I do not have to worry about algae any more! I wish I had started using this GFO years ago!!! Thank You BRS!

What a great valueBy Mrfairywrasseon 2/6/2011

Mrfairywrasse would recommend this product to a friend

I have tried 5 different GFO products in the last 4 years and this one is the best. Easy to rinse, very effective and an incredible value over other products. NO more hair algae!

Does a Great jobBy Metal Manon 1/31/2011

Metal Man would recommend this product to a friend

This GFO saved my tank from a GHA plauge. Now after Iv pulled it off Iv got a cyano out break, so it looks like I will be ordering more.

Works GreatBy Zachon 1/21/2011

Zach would recommend this product to a friend

I've been using this GFO for about 6 months and it works great.

its ok, but sub parBy Chuon 1/19/2011

Chu wouldn't recommend this product to a friend

It only stops my cyano from spreading further but does not remove it completely.

Awesome deal!By Mikeon 1/10/2011

Mike would recommend this product to a friend

Thus makes robbing a bank seem hard! No more wasted money on over priced competitors products. This is what you want!

GreatBy Darenon 1/10/2011

Daren would recommend this product to a friend

Works Awesome. Great Price.

works great!!By Donaldon 1/9/2011

Donald would recommend this product to a friend

I had a lot of hair algae, after using this product for a few weeks the algae is dissapearing......awesome""

Great ValueBy Richardon 1/3/2011

Richard would recommend this product to a friend

I always purchased the expensive brands until I tried BRS, the quality is the same or better but SO much cheaper. Thank You.

more product for the $ spentBy bradon 12/29/2010

brad would recommend this product to a friend

more product for the $ spent,i had a bad algeae outbreak and it helped cut my algae problem now i know it's time to replace my light bulbs